Ultra-wide-angle optical receiver

Abstract

The embodiment of the invention provides an ultra-wide-angle optical receiver. The ultra-wide-angle optical receiver comprises a shell assembly, a control panel and at least three groups of receiving units, wherein the control panel and the at least three groups of receiving units are arranged in the shell assembly; the shell assembly is in a hemisphere shape. The value range of an included angle between every two adjacent groups of receiving units is 30-150 degrees, and the groups of receiving units are arranged at equal intervals; the receiving unit comprises a light receiving element, an angle limiting bracket and a flexible circuit board; the outward side of the angle limiting bracket is connected with the light receiving element through the flexible circuit board; the light receiving element is electrically connected with the control panel through the flexible circuit board; the value range of the receiving angle of the light receiving element is 60-180 degrees; and when the receiver receives wireless light, each group of receiving units are horizontally combined to form a wide angle less than or equal to 360 degrees, and each group of receiving units are vertically combined to form a wide angle less than or equal to 228 degrees.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to an ultra-wide-angle optical receiver. Background Art

[0002] In recent years, light-emitting diode (LED) lighting technology has developed rapidly. Compared to traditional lighting sources, white LEDs not only offer low power consumption, long life, compact size, and environmental friendliness, but also superior modulation performance and high sensitivity. Leveraging these characteristics, LEDs can be used for both lighting and data transmission by modulating network signals onto the LED's visible light beam, enabling an emerging optical wireless communication technology known as Light Fidelity (LiFi). Optical communication network transceivers are a typical application of visible light communication technology. Li-Fi technology means that anyone with a light bulb can gain an optical wireless internet connection. There are approximately 14 billion light bulbs worldwide. This means that any streetlight can become an internet access point, increasing internet coverage. Because visible light travels only in straight lines, only those in the light's path can intercept information, providing extremely high security. WiFi, the primary wireless data transmission technology, utilizes radio frequency signals.

[0003] However, radio waves only account for a tiny fraction of the electromagnetic spectrum. As demand for wireless internet grows, available radio frequency spectrum is becoming increasingly scarce. However, Li-Fi uses visible light, a spectrum 10,000 times wider than the radio frequency spectrum. This means visible light communication offers significantly higher bandwidth. Li-Fi technology can deliver data speeds of up to Gbps.

[0004] However, the reception angle of currently available optical receivers is relatively narrow. If the receiver's location is not fixed or coverage of a larger area is required, wide-angle reception can ensure stable signals. If the reception angle is limited, communication will only be possible when the optical receiver is facing the light source; even slight movement will result in disconnection. Therefore, developing a wide-angle reception method can enhance mobility, allowing users to receive signals regardless of their location. This will facilitate the widespread adoption of this technology. Summary of the Invention

[0005] In view of the above problems, embodiments of the present invention are proposed to provide an ultra-wide-angle optical receiver that overcomes the above problems or at least partially solves the above problems:

[0006] An ultra-wide-angle optical receiver comprises a housing assembly, a control board disposed within the housing assembly, and at least three groups of receiving units; the housing assembly is hemispherical;

[0007] The angle between each adjacent group of receiving units ranges from 30° to 150°, and the receiving units in each group are arranged at equal intervals;

[0008] The receiving unit includes a light receiving element, an angle limiting bracket, and a flexible circuit board; the angle limiting bracket is connected to the light receiving element through the flexible circuit board on its outward side; the light receiving element is electrically connected to the control board through the flexible circuit board; the receiving angle of the light receiving element ranges from 60° to 180°;

[0009] When the receiver receives wireless light, each group of receiving units is horizontally combined to form a wide angle of less than or equal to 360°, and each group of receiving units is vertically combined to form a wide angle of less than or equal to 228°.

[0010] Preferably, the receiving angle of the light receiving element is 120°.

[0011] Preferably, the light receiving element includes a first element and a second element;

[0012] The first element and the second element are disposed adjacent to each other in a longitudinal direction.

[0013] Preferably, the angle between the angle limiting bracket and the vertical direction ranges from 10° to 50°.

[0014] Preferably, the angle between the angle limiting bracket and the vertical direction is 30°.

[0015] Preferably, the angle limiting brackets in each group of the receiving components are integrally formed.

[0016] Preferably, the housing assembly includes a rear housing, a middle housing, and a transceiver housing;

[0017] The rear shell, the middle shell and the transceiver housing cooperate with each other to form a hemispherical shape for accommodating the receiving unit;

[0018] The rear shell is connected to the transceiver rear shell through the middle shell; the transceiver shell is a transparent hemisphere.

[0019] Preferably, the rear shell is disc-shaped, and a wire groove is provided on one side of the rear shell;

[0020] The rear shell is adapted to the middle shell.

[0021] Preferably, the middle shell is annular, one end of the middle shell is snap-connected to the transceiver housing, and the other end of the middle shell is fixedly connected to the rear shell.

[0022] Preferably, a backing glue is provided on a side of the rear shell away from the middle shell, and the shape of the backing glue is adapted to the shape of the rear shell.

[0023] This application specifically includes the following advantages:

[0024] In an embodiment of the present application, in contrast to the relatively narrow receiving angle problem of conventional receiving devices, the present application provides a solution in which the angle between adjacent groups of receiving units ranges from 30° to 150°. Specifically, the solution comprises: a housing assembly, a control board disposed within the housing assembly, and at least three groups of receiving units; the housing assembly is hemispherical; the angle between adjacent groups of receiving units ranges from 30° to 150°, and the receiving units in each group are evenly spaced; the receiving units comprise a light receiving element, an angle limiting bracket, and a flexible circuit board; the angle limiting bracket is connected to the light receiving element via the flexible circuit board on its outward side; the light receiving element is electrically connected to the control board via the flexible circuit board; the light receiving element has a receiving angle range of 60° to 180°; and when the receiver receives wireless light, each group of receiving units horizontally forms a wide angle of less than or equal to 360°, and each group of receiving units vertically forms a wide angle of less than or equal to 228°. The present application proposes at least three groups of receiving units to address the technical problem of relatively narrow receiving angles in current receiving devices. This application achieves 360° seamless coverage horizontally through at least four groups of equally spaced receiving units, eliminating blind spots. Vertically, it achieves a wide angle of 228°, far exceeding the viewing angle limitations of traditional receivers and suitable for complex spatial environments. Each group of receiving units is independently equipped with a light receiving element with an adjustable receiving angle of 60°-180°. Through the collaboration of multiple units, it can dynamically adapt to light with different incident angles to avoid signal loss. The angle-limiting bracket combined with the flexible circuit board design ensures precise alignment of the optical path and alleviates damage to the components caused by mechanical stress. The hemispherical shell assembly and equally spaced layout optimize space utilization and are suitable for miniaturized integration. The flexible circuit board achieves electrical connection, taking into account wiring flexibility and vibration resistance, thereby improving equipment durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for the description of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] Figure 1 It is a schematic diagram of the exploded structure of an ultra-wide-angle optical receiver of the present invention;

[0027] Figure 2 1 is a schematic diagram of a top view of an ultra-wide-angle optical receiver of the present invention;

[0028] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0029] Figure 4 yes Figure 2 Schematic diagram of the cross-sectional structure of the middle BB;

[0030] Figure 5 1 is a schematic side view of the structure of an ultra-wide-angle optical receiver of the present invention;

[0031] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure of the CC;

[0032] Figure 7 yes Figure 2 A schematic cross-sectional structure diagram of the receiving angle AA of the first embodiment;

[0033] Figure 8 yes Figure 2 A schematic cross-sectional view of the receiving angle of the first embodiment BB;

[0034] Figure 9 yes Figure 5 A schematic cross-sectional view of the receiving angle of the first embodiment CC;

[0035] Figure 10 yes Figure 2 A schematic cross-sectional structure diagram of the receiving angle AA of the second embodiment;

[0036] Figure 11 yes Figure 2 A schematic cross-sectional view of the receiving angle of the second embodiment BB;

[0037] Figure 12 yes Figure 5 A schematic cross-sectional view of the receiving angle of the second embodiment CC;

[0038] Figure 13 yes Figure 2 A schematic cross-sectional structure diagram of the receiving angle AA of the third embodiment;

[0039] Figure 14 yes Figure 2 A schematic cross-sectional view of the receiving angle of the third embodiment BB;

[0040] Figure 15 yes Figure 5 A schematic cross-sectional view of the receiving angle of the third embodiment CC;

[0041] 1. Adhesive backing; 2. Back cover; 3. Control board; 4. Angle limiting bracket; 5. Flexible circuit board; 6. Light receiving element; 7. Middle cover; 8. Transceiver housing. DETAILED DESCRIPTION

[0042] To make the objectives, features, and advantages of this application more readily apparent, the present application is further described below in conjunction with the accompanying drawings and specific embodiments. It is apparent that the embodiments described are only a portion of the embodiments of this application, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without inventive effort are also within the scope of protection of this application.

[0043] After analyzing existing technologies, the inventors discovered that radio waves only account for a small portion of the entire electromagnetic spectrum. As user demand for wireless internet grows, the available radio frequency spectrum is becoming increasingly scarce. However, Li-Fi uses visible light, whose spectrum is 10,000 times wider than the radio frequency spectrum. This means that visible light communication offers higher bandwidth. Li-Fi technology can deliver data transmission speeds of up to Gbps. However, the reception angle of currently available optical receivers is relatively narrow. If the receiving device is not fixed or needs to cover a larger area, wide-angle reception can ensure signal stability. If the reception angle is limited, the optical receiver can only communicate directly with the light source; even the slightest movement will result in disconnection. Therefore, the invention of a wide-angle reception method can enhance mobility, allowing users to receive signals in different locations. This will facilitate the promotion and popularization of this technology.

[0044] One of the purposes of the present invention is to provide a device capable of receiving light information at an ultra-wide angle, thereby solving the technical problem in the prior art that the light information receiving angle is too narrow and inconvenient to use.

[0045] One of the objectives of the present invention is to provide a visible light communication receiver with an expanded receiving angle, so as to solve the problem that the receiving angle of receiving devices on the market is relatively narrow.

[0046] In an embodiment of the present application, compared with the problem that the receiving angle of the receiving device in the prior art is relatively narrow, the present application provides a solution in which the angle between each adjacent group of receiving units is in the range of 30°-150°, specifically: it includes a shell assembly, a control board 3 and at least three groups of receiving units arranged in the shell assembly; the shell assembly is hemispherical; the angle between each adjacent group of receiving units is in the range of 30°-150°, and each group of receiving units is arranged at equal intervals; the receiving unit includes a light receiving element 6, an angle limiting bracket 4 and a flexible circuit board 5; the angle limiting bracket 4 is connected to the light receiving element 6 through the flexible circuit board 5 on the outward side; the light receiving element 6 is electrically connected to the control board 3 through the flexible circuit board 5; the receiving angle of the light receiving element 6 is in the range of 60°-180°; when the receiver receives wireless light, each group of receiving units is horizontally combined to form a wide angle of less than or equal to 360°, and each group of receiving units is vertically combined to form a wide angle of less than or equal to 228°. This application will propose at least three groups of receiving units to solve the technical problem of relatively narrow receiving angles of receiving devices on the market. In the horizontal direction, this application achieves 360° seamless coverage through at least four groups of equally spaced receiving units, eliminating blind spots; vertically, it jointly covers a wide angle of 228°, far exceeding the viewing angle limitations of traditional receivers and suitable for complex spatial environments; each group of receiving units is independently configured with a light receiving element 6 with an adjustable receiving angle of 60°-180°, which can dynamically adapt to light with different incident angles through the collaboration of multiple units to avoid signal loss; the angle limiting bracket 4 is combined with the design of the flexible circuit board 5 to ensure precise alignment of the optical path and alleviate damage to the components caused by mechanical stress. The hemispherical shell assembly and the equally spaced layout optimize space utilization and are suitable for miniaturized integration; the flexible circuit board 5 realizes electrical connection, taking into account wiring flexibility and vibration resistance, thereby improving equipment durability.

[0047] Reference Figure 1 , shows a schematic structural diagram of the present invention, which may specifically include the following structures.

[0048] In this embodiment of the present application, the side of the rear housing 2 away from the middle housing 7 is provided with adhesive 1, the shape of which matches the shape of the rear housing 2. The adhesive 1 is used to directly fix the light receiver to the ceiling.

[0049] As an example, the adhesive backing 1 is in a circular ring shape, which connects the receiver to a fixed wall or ceiling. The adhesive backing 1 is provided on the side of the rear housing 2 away from the middle housing 7. Its shape is fully compatible with the rear housing 2 and is primarily used to secure the optical receiver to the ceiling. The adhesive backing 1 can be designed in a circular ring shape. This circular ring-shaped adhesive backing 1 can securely connect the receiver to a fixed wall or ceiling, achieving convenient installation and stable fixation.

[0050] In the embodiment of the present application, the shell assembly is hemispherical; the shell assembly includes a rear shell 2, a middle shell 7 and a transceiver shell 8; the rear shell 2, the middle shell 7 and the transceiver shell 8 cooperate with each other to form a hemispherical shape for accommodating the receiving unit; the rear shell 2 is connected to the transceiver rear shell 2 through the middle shell 7; the transceiver shell 8 is a transparent hemispherical body.

[0051] In this embodiment, the rear housing 2 is disc-shaped, with a wire groove on one side. The rear housing 2 is compatible with the middle housing 7. The rear housing 2 and middle housing 7 form a single unit, protecting internal components from damage. A protruding groove is located in the center of the rear housing 2 to accommodate other components.

[0052] In the embodiment of the present application, the middle shell 7 is annular, with one end of the middle shell 7 snap-fitted to the transceiver housing 8, and the other end of the middle shell 7 fixedly connected to the rear shell 2. The diameter of the middle shell 7 is the same as that of the rear shell 2, and a protrusion is provided on one side of the middle shell 7 at a position that matches the wire trough.

[0053] In this embodiment, the transceiver housing 8 is a transparent hemispherical shape. This ensures the transmission of light carrying optical information while protecting the light receiving element 6 and other components from scratches. An extension ring is provided around the transceiver housing 8, which is used to connect to the middle housing 7. A slot is provided at the junction of the middle housing 7 and the transceiver housing 8 to accommodate the extension ring.

[0054] In one embodiment, the design of the housing assembly is embodied in the coordinated cooperation of its various parts. The assembly consists of a rear housing 2, a middle housing 7, and a transceiver housing 8, which work together to form a hemispherical structure for accommodating the receiving unit. The rear housing 2, as the base of the assembly, is disc-shaped, with carefully designed cable ducts on one side providing an orderly space for cable routing. It perfectly matches the middle housing 7, and the two combine to form a stable whole, protecting the internal components from possible damage caused by the outside world. The raised groove in the center of the rear housing 2 reserves a precise location for other components, ensuring the neat and stable installation of each component.

[0055] In one embodiment, the middle shell 7 and the transceiver housing 8 also play an indispensable role. The middle shell 7 is annular, with one end connected to the transparent hemispherical transceiver housing 8 via a snap-fit ​​design. This design ensures a tight connection and facilitates installation and removal. The other end is fixedly connected to the rear shell 2, thus connecting the entire housing assembly into a single, integrated whole. The middle shell 7 has the same diameter as the rear shell 2 and features protrusions at locations that align with the wire slots. These protrusions interact with the wire slots to further enhance the assembly's stability and sealing. The transceiver housing 8, a key channel for light entry, is made of a transparent material that ensures smooth transmission of light carrying optical information while protecting the internal light receiving element 6 from scratches. The peripheral extension ring precisely mates with the slots in the middle shell 7, ensuring a secure connection and maintaining the stability of the entire structure during light transmission, providing reliable protection for accurate reception of optical signals.

[0056] In the embodiment of the present application, the control board 3 is a PCB control board 3, which is connected to the rear housing 2 and controls the entire device. The light receiving element 6 is electrically connected to the control board 3 via the flexible circuit board 5. The control board 3 is used for signal processing directly by the hardware circuit.

[0057] In one embodiment, a PCB control board 3 controls the entire device. It is connected to the rear housing 2 and governs its operation. Light receiving element 6 is electrically connected to control board 3 via a flexible printed circuit board 5. This connection ensures stable signal transmission while providing flexibility in component layout, ensuring that the optical signal is accurately processed by control board 3 after reception and transmission.

[0058] In this embodiment, the flexible circuit board is an FPC (Flexible Printed Circuit) cable. The light receiving element 6 is electrically connected to the control board 3 via the flexible circuit board 5. FPC, also known as Flexible Printed Circuit (FPC), is made from polyimide or polyester film and is highly flexible, allowing for free bending and winding. This allows for signal transmission and electrical connections within the compact interior space of electronic products.

[0059] As an example, the light receiving element 6 is a photodiode (PD). In this embodiment, the photodiode, as a key light receiving element 6, is housed within the internal space protected by the transceiver housing 8. When light carrying optical information passes through the transparent transceiver housing 8, the photodiode quickly and efficiently converts the optical signal into an electrical signal, which is then transmitted via the flexible flatbed cable (FPC) to the PCB control board 3 for processing. The tightly fitting housing components form a stable structure that not only provides safety protection for the photodiode but also ensures its stable operation, ensuring that the optical signal reception and conversion process is not subject to external interference.

[0060] In an embodiment of the present application, the angle between each adjacent group of receiving units is in the range of 30°-150°, and the receiving units in each group are arranged at equal intervals; the receiving unit includes a light receiving element 6, an angle limiting bracket 4 and a flexible circuit board 5; the outward side of the angle limiting bracket 4 is connected to the light receiving element 6 through the flexible circuit board 5; the light receiving element 6 is electrically connected to the control board 3 through the flexible circuit board 5; the receiving angle of the light receiving element 6 is in the range of 60°-180°; when the receiver receives wireless light, each group of the receiving units is horizontally combined to form a wide angle of less than or equal to 360°, and each group of the receiving units is vertically combined to form a wide angle of less than or equal to 228°.

[0061] In the embodiment of the present application, the light receiving element 6 includes a first element and a second element; the first element and the second element are disposed adjacent to each other in the longitudinal direction. The first element and the second element are respectively disposed on the angle limiting bracket 4. Because the angle limiting bracket 4 is not 0° relative to the vertical direction, the angle limiting bracket 4 is at a certain angle relative to the vertical direction, resulting in different receiving angles of the first element and the second element.

[0062] As an example, the light receiving element 6 includes a first element, a second element and a third element; the first element, the second element and the third element are arranged adjacent to each other in the longitudinal direction.

[0063] As an example, the light receiving element 6 includes a first element, a second element, a third element and a fourth element; the first element, the second element, the third element and the fourth element are arranged adjacent to each other in the longitudinal direction.

[0064] In an embodiment of the present application, the receiving angle of the light receiving element 6 is 120°; optionally, the receiving angle of the light receiving element 6 is 90°; optionally, the receiving angle of the light receiving element 6 is 60°; optionally, the receiving angle of the light receiving element 6 is 180°.

[0065] In an embodiment of the present application, the angle limiting bracket 4 in each group of the receiving components is integrally formed; the angle limiting bracket 4 includes a base and a side bracket, and the base and the side bracket are integrally formed; when there are three angle limiting brackets 4, the three angle limiting brackets 4 are integrally formed, the base at the bottom forms a circle, and the three side brackets are all set at a certain angle to the vertical direction.

[0066] In the embodiment of the present application, the angle between the angle limiting bracket 4 and the vertical direction is in the range of 10°-50°; preferably, the angle between the angle limiting bracket 4 and the vertical direction is 10°; preferably, the angle between the angle limiting bracket 4 and the vertical direction is 20°; preferably, the angle between the angle limiting bracket 4 and the vertical direction is 30°; preferably, the angle between the angle limiting bracket 4 and the vertical direction is 40°; preferably, the angle between the angle limiting bracket 4 and the vertical direction is 50°. Specifically, the angle between the angle limiting bracket 4 and the vertical direction is outward, that is, it is set outward away from the central axis.

[0067] In the embodiment of the present application, it can be set as four groups of receiving units, or it can be set as three groups of receiving units, or it can be set as two groups of receiving units, or it can be set as six groups of receiving units.

[0068] In an embodiment of the present application, the angle between each adjacent group of receiving units is equal to 90°; the angle between each adjacent group of receiving units is equal to 120°; the angle between each adjacent group of receiving units is equal to 60°; the angle between each adjacent group of receiving units is equal to 30°; the angle between each adjacent group of receiving units is equal to 45°; and the angle between each adjacent group of receiving units is equal to 150°.

[0069] As a first embodiment, Figure 2-Figure 8 As shown, the angle limiting bracket 4 forms an angle of 30° with the vertical direction, and the light receiving element 6 includes a first element and a second element; the first element and the second element are arranged adjacent to each other longitudinally; four groups of receiving components are provided, and the receiving angle of the light receiving element 6 is 120°, that is, the receiving angles of the first element and the second element are both 120°, and the angle between each adjacent group of receiving units is equal to 90°. When the receiver receives wireless light, each group of receiving units is horizontally combined to form a 360° wide angle, and each group of receiving units is vertically combined to form a 228° wide angle.

[0070] Figure 7 The vertical X direction of the ultra-wide-angle optical receiver, Figure 2 In the middle AA cross-sectional diagram, the receiving angle of a single photodiode is 120°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups of angles can expand the original 120° receiving angle to 228°.

[0071] Figure 8 The vertical X direction of the ultra-wide-angle optical receiver, Figure 2In the middle BB cross-sectional diagram, the receiving angle of a single photodiode is 120°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups can expand the original 120° receiving angle to 228°.

[0072] Figure 9 For ultra-wide-angle optical receiver level, Figure 2 In the CC cross-sectional diagram, the receiving angle of a single photodiode is 120°. By combining four groups of angles, the original 120° receiving angle can be expanded to 360° with no blind spots.

[0073] As a second embodiment, Figure 10-12 The angle between the angle limiting bracket 4 and the vertical direction is 30°, and the light receiving element 6 includes a first element and a second element; the first element and the second element are arranged adjacent to each other longitudinally; six groups of receiving components are set, and the receiving angle of the light receiving element 6 is 60°, that is, the receiving angles of the first element and the second element are both 60°, and the angle between each adjacent group of receiving units is equal to 30°. When the receiver receives wireless light, each group of receiving units is horizontally combined to form a 360° wide angle, and each group of receiving units is vertically combined to form a 120° wide angle.

[0074] Figure 10 The AA cross-section diagram of the optical receiver in the vertical Y direction shows that the receiving angle of a single photodiode is 60°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups can expand the original 60° receiving angle to 174.3-54.3=120°.

[0075] Figure 11 The BB cross-section diagram is a vertical X-direction diagram of the optical receiver. The receiving angle of a single photodiode is 60°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups can expand the original 60° receiving angle to 174.3-54.3=120°.

[0076] Figure 12 This is a horizontal CC cross-sectional diagram of the optical receiver. The receiving angle of a single photodiode is 60°. By combining 6 groups of angles, the original receiving angle of only 60° can be expanded to 360° coverage without blind spots.

[0077] As a third embodiment, Figure 13-15The angle between the angle limiting bracket 4 and the vertical direction is 30°, and the light receiving element 6 includes a first element and a second element; the first element and the second element are arranged adjacent to each other longitudinally; three groups of receiving components are set, and the receiving angle of the light receiving element 6 is 90°, that is, the receiving angles of the first element and the second element are both 90°, and the angle between each adjacent group of receiving units is equal to 60°. When the receiver receives wireless light, each group of receiving units is horizontally combined to form a 270° wide angle, and each group of receiving units is vertically combined to form a 180° wide angle.

[0078] Figure 13 The AA cross-section diagram of the optical receiver in the vertical Y direction shows that the receiving angle of a single photodiode is 90°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups can expand the original 90° receiving angle to 204.3-24.3=180°.

[0079] Figure 14 The BB cross-section diagram is a vertical X-direction diagram of the optical receiver. The receiving angle of a single photodiode is 90°. By combining two photodiodes into a group, the receiving intensity of the same group can be enhanced. The combination of the left and right groups can expand the original 90° receiving angle to 204.3-24.3=180°.

[0080] Figure 15 This is a horizontal CC cross-sectional diagram of the optical receiver. The receiving angle of a single photodiode is 90°. By combining the angles, the original receiving angle of 90° can be expanded to 270°.

[0081] In the optical receivers of the embodiments of the present invention, the photodiodes have reception angles of 60°, 90°, and 120°, respectively. The photodiodes are arranged in groups of two, six, three, and four at angles relative to each other. It should be noted that the reception angles and combinations of the optical receivers shown in the drawings and described in this specification are merely examples of many optical receivers that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any detail or component of the optical receivers shown in the drawings or described in this specification.

[0082] During the transmission process implemented by the present invention, for the downlink data transmitter, the network data to be transmitted is first coded and modulated by the data processing module. The driving circuit module then converts the electrical signal into an optical signal, which is then transmitted via an LED in the form of visible light communication. For the data receiver, two sets of photodiodes (PDs) convert the visible light information into an electrical current, which is then decoded and demodulated by the data processing module to obtain the required network data.

[0083] For the uplink data transmitter, the network data to be transmitted is first coded and modulated by the data processing module. The driver circuit module then converts the electrical signal into an invisible light signal, which is then transmitted via the invisible light transmitter in the form of invisible light communication. For the data receiver, the invisible light information is converted into an electric current by the invisible light receiver, which is then decoded and demodulated by the data processing module to obtain the required network data.

[0084] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or terminal device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or terminal device that includes the element.

[0085] The above is a detailed introduction to the ultra-wide-angle optical receiver provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. At the same time, for those skilled in the art, based on the concept of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. An ultra-wide-angle optical receiver, characterized in that: It comprises a housing assembly, a control panel and at least three receiving units arranged in the housing assembly; the housing assembly is hemispherical; The angle between each adjacent group of receiving units ranges from 30° to 150°, and the receiving units in each group are arranged at equal intervals; The receiving unit includes a light receiving element, an angle limiting bracket and a flexible circuit board; the outward side of the angle limiting bracket is connected to the light receiving element through the flexible circuit board; The light receiving element is electrically connected to the control board through the flexible circuit board; the receiving angle of the light receiving element ranges from 60° to 180°; When the receiver receives wireless light, each group of receiving units is horizontally combined to form a wide angle of less than or equal to 360°, and each group of receiving units is vertically combined to form a wide angle of less than or equal to 228°.

2. The ultra-wide-angle optical receiver according to claim 1, wherein: The receiving angle of the light receiving element is 120°.

3. The ultra-wide-angle optical receiver according to claim 1, wherein: The light receiving element includes a first element and a second element; The first element and the second element are disposed adjacent to each other in a longitudinal direction.

4. The ultra-wide-angle optical receiver according to claim 1, wherein: The angle between the angle limiting bracket and the vertical direction ranges from 10° to 50°.

5. The ultra-wide-angle optical receiver according to claim 4, characterized in that: The angle between the angle limiting bracket and the vertical direction is 30°.

6. The ultra-wide-angle optical receiver according to claim 1, wherein: The angle limiting brackets in each group of the receiving components are integrally formed.

7. The ultra-wide-angle optical receiver according to claim 1, wherein: The housing assembly includes a rear housing, a middle housing, and a transceiver housing; The rear shell, the middle shell and the transceiver housing cooperate with each other to form a hemispherical shape for accommodating the receiving unit; The rear shell is connected to the transceiver rear shell through the middle shell; the transceiver shell is a transparent hemisphere.

8. The ultra-wide-angle optical receiver according to claim 7, characterized in that: The rear shell is disc-shaped, and a wire groove is provided on one side of the rear shell; The rear shell is matched with the middle shell.

9. The ultra-wide-angle optical receiver according to claim 7, characterized in that: The middle shell is in a circular ring shape, one end of the middle shell is snap-connected to the transceiver housing, and the other end of the middle shell is fixedly connected to the rear shell.

10. The ultra-wide-angle optical receiver according to claim 7, characterized in that: A back glue is provided on a side of the rear shell away from the middle shell, and a shape of the back glue is adapted to a shape of the rear shell.

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